Patents by Inventor Rollin V. Barto

Rollin V. Barto has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5289880
    Abstract: A towable road tender device for grading unpaved roadway surfaces. The tender device may be hitched to commercial vehicles but is particularly suited for use with private vehicles, such as small tractors and pickup trucks. A set of relatively lightweight frames reduce the weight to be pulled by the vehicle. The towable road tender device is sized to be operated using small-scale power take-off units commonly available in private vehicles, such as, for example, the power units of conventional front-end plows. The set of lightweight frames includes a support frame that secures the tending tool, a wheel frame that pivots the rear towing wheels either toward or away from the support frame, and an attachment frame joining the other two frames to a hitch on the towing vehicle. The attachment frame is designed to keep the support frame parallel to the plane of the underlying roadway surface as that support frame is raised or lowered.
    Type: Grant
    Filed: June 3, 1992
    Date of Patent: March 1, 1994
    Inventor: Rollin V. Barto